Changes

  | part    = Predicting the occurrence of oil and gas traps

  | part    = Predicting the occurrence of oil and gas traps

  | chapter = Exploring for structural traps

  | chapter = Exploring for structural traps

  | frompg  = 20-1

  | frompg  = 20-27

  | topg    = 20-70

  | topg    = 20-28

  | author  = R.A. Nelson, T.L. Patton, S. Serra

  | author  = R.A. Nelson, T.L. Patton, S. Serra

  | link    = http://archives.datapages.com/data/specpubs/beaumont/ch20/ch20.htm

  | link    = http://archives.datapages.com/data/specpubs/beaumont/ch20/ch20.htm

* Refraction

* Refraction

'''2-D reflection seismic data''' provide cross-sectional views in both the dip and strike directions. Data on the lines are a mixture of both in-plane and out-of-plane reflectors. 2-D reflection seismic data are most important in the earlier stages of an exploration program, especially in frontier basins.

'''2-D reflection seismic data''' provide cross-sectional views in both the [[dip]] and strike directions. Data on the lines are a mixture of both in-plane and out-of-plane reflectors. 2-D reflection seismic data are most important in the earlier stages of an exploration program, especially in frontier basins.

'''3-D reflection seismic data''' provide resolved cross-sectional views along any azimuth within the survey area. Time “slices” (maps) on any horizon can also be generated. The nature and location of out-of-plane features can be more accurately determined. Because of the high acquisition costs, 3-D seismic techniques normally are used only to more accurately define individual prospects.

'''3-D reflection seismic data''' provide resolved cross-sectional views along any [[azimuth]] within the survey area. Time “slices” (maps) on any horizon can also be generated. The nature and location of out-of-plane features can be more accurately determined. Because of the high acquisition costs, 3-D seismic techniques normally are used only to more accurately define individual prospects.

'''Shear wave data''', in combination with conventional compressional wave data, can provide information on lithology, fractures, and the presence of hydrocarbons.

'''Shear wave data''', in combination with conventional compressional wave data, can provide information on lithology, [[fracture]]s, and the presence of hydrocarbons.

'''Refraction seismic data''' provide a deep crustal view of gross structure (basin scale to lithosphere-upper mantle scale), which is useful when trying to understand regional tectonics.

'''Refraction seismic data''' provide a deep crustal view of gross structure (basin scale to lithosphere-upper [[mantle]] scale), which is useful when trying to understand regional tectonics.

==How to use it==

==How to use it==

* Interpretation on each line should proceed from well-imaged, well-constrained portions of the line toward areas of poorer constraint. Use symbols for varying quality of interpretation.

* Interpretation on each line should proceed from well-imaged, well-constrained portions of the line toward areas of poorer constraint. Use symbols for varying quality of interpretation.

* Map multiple horizons.

* Map multiple horizons.

* Map and contour fault surfaces critical to closure.

* Map and [[contour]] fault surfaces critical to closure.

* Integrate fault and horizon contours.

* Integrate fault and horizon contours.

* In thrust, rift, and extensional terranes, emphasize dip line interpretation; in foreland and wrench terranes, equally emphasize strike line interpretation.

* In thrust, rift, and extensional terranes, emphasize dip line interpretation; in foreland and [http://www.glossary.oilfield.slb.com/en/Terms.aspx?LookIn=term%20name&filter=wrench%20fault wrench] terranes, equally emphasize strike line interpretation.

* Generate depth conversions during iterative interpretations.

* Generate depth conversions during iterative interpretations.

==See also==

==See also==

* [[Prospect delineation techniques and tools]]

* [[Forward modeling of seismic data]]

* [[Tectonic modeling]]

* [[Balanced cross sections]]

* [[Dipmeter analysis]]

* [[Fault seal-conduit studies]]

* [[Petrofabrics]]

* [[Fracture analysis]]

* [[Vertical and lateral seismic resolution and attenuation]]

* [[Three-dimensional seismic method]]

* [[3-D seismic data: the data cube]]

* [[Components of a 3-D seismic survey]]

* [[3-D seismic data views]]

* [[Seismic data - mapping with two-dimensional data]]

* [[Phases of a seismic project]]

* [[Seismic data interpretation - recurring themes]]

==External links==

==External links==

[[Category:Predicting the occurrence of oil and gas traps]]  

[[Category:Predicting the occurrence of oil and gas traps]]  

[[Category:Exploring for structural traps]]

[[Category:Exploring for structural traps]]